Shell Scripting Help

[Brian Fahrlander]

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Nils Kassube wrote:
> Ghodmode wrote:
>> # Let the shell do the basic math instead of calling an external
>> program
> 
> I like your logic, although I'd say "Better let date do the math instead 
> of writing a faulty script" :)
> 
>> if [ $DAY -eq 0 ]; then
>>     MONTH=$(( MONTH - 1 ))
>>     [ $MONTH -eq 0 ] && $MONTH = 12
> 
> E.g. the last line should be
> 
>     [ $MONTH -eq 0 ] && MONTH=12 && YEAR=$(($YEAR - 1))
> 
> but this is untested, so it might be faulty as well.
> 
>> On 5/15/07, Nils Kassube <kassube at gmx.net> wrote:
>>> How about this one?
>> echo "1 day ago was: $(date -d yesterday '+%m %d %Y')"
>>
>>
>> Thanks, Nils.. I didn't know date had that argument :)
> 
> That's the beauty of the date command -- it understands many verbose 
> descriptions of the date / time to display. Meanwhile i think it would 
> have been more consistent to write the command like this:
> 
> echo "1 day ago was: $(date -d '1 day ago' '+%m %d %Y')"

    Well, isn't that the coolest thing?  Thanks so much; the changes
that get made to such longstanding code, when your back's turned. Thanks
so much for pointing it out!

    :)

    (The other email was a massive typo; sorry)

- --
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 Brian Fahrländer                 Christian, Conservative, and Technomad
 Evansville, IN                              http://Fahrlander.net/brian
 ICQ: 5119262                         AOL/Yahoo/GoogleTalk: WheelDweller
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